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ASTM B631 Class A vs. AWS ERNiCrMo-4

ASTM B631 class A belongs to the otherwise unclassified metals classification, while AWS ERNiCrMo-4 belongs to the nickel alloys. There are 12 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM B631 class A and the bottom bar is AWS ERNiCrMo-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 85 to 86
84

Thermal Properties

Latent Heat of Fusion, J/g 160
310
Melting Completion (Liquidus), °C 2680 to 2690
1590
Specific Heat Capacity, J/kg-K 160
410
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Density, g/cm3 15
9.0
Embodied Carbon, kg CO2/kg material 43
13
Embodied Energy, MJ/kg 670
170

Common Calculations

Stiffness to Weight: Axial, points 8.5
13
Stiffness to Weight: Bending, points 14
22